D121212121213132322331323323132313331323132333131123313232111111   >>    D12121212121313232233132332313231333132313233313112331323211111   <<    D121212121213132322331323323132313331323132333131123313232111113   >>      D121212121213132322331323323132313331323132333131123313232111112   >>